ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Lipid retention of novel pressurized extraction vessels as a function of the number of static and flushing cycles, flush volume, and flow rate

Stacey D. Haskins, David G. Kelly, and Ron D. Weir

Analytical Sciences Group, Department of Chemistry and Chemical Engineering, Royal Military College of Canada, 11 General Crerar Crescent, Box 17000 Station Forces, Kingston, Ontario, Canada K7K 7B4

E-mail: David.Kelly@RMC.ca

Abstract: Lipid retention in novel pressurized solvent extraction vessels was examined as a function of static and flushing cycles, flushing flow rate and flush volume in an effort to decrease lipid elution after extraction. Results indicate that none of these variables plays a pivotal role in lipid retention within this system. Regardless of which variable was altered, lipid elution remained virtually constant at (55 ± 7) %. Findings suggest that lipid elution has more to do with the high flow rate at which extracts are purged from the system at the end of the static cycle.

Keywords: pressurized solvent extraction – lipid retention – static cycle – flow rate – Florisil

Full paper is available at www.springerlink.com.

DOI: 10.2478/s11696-011-0022-5

Chemical Papers 65 (4) 393–397 (2011)